Distribution of the quality of the fits for stellar parameters of star Sk−68 ° 41. In dark grey the 1-σ interval is shown while the light grey shows the 2-σ interval. The red line shows the best fit value. We only display the C-abundance as the other elements have similar fitting curves. As mentioned in Section 2.3 and the following sections we derive the maximum projected rotational velocity from the optical-only fit which is why there are only 21 generations.